Eyeglasses.



' OfB. CARSON & H. H. STYLL. .BYBGLASSESV- APPLICATION FILED MAY 4. 1910.

1,008,240. Patentl Nox/.7,1911

yallllumu j UNITED STATESPATENT ()FFCEav OSWALD B. CARSON ANDYHARRY H. STYLL, 0F SOUTHRIDGE, MASSACHUSETTS, AS-

SIGN'ORS T0 AMERICAN OPTICAL COMPANY, OF SOUTHBRIDGE MASSACHUSETTS,

A CORPORATION 0F MASSACHUSETTS.

EYEGLASSES.

" specification of Leiters Patent.

Patented Nov. 7, 1911.

lApplicaconled May 4, 1910. Serial No. 559,382. l

To all 'whom 'it mail concern:

Be it known that'we, OswALD B. CARSON and HARRY H. STYLL, both residing at Southbridge, in the county of Worcester and State of Massachusetts, and citizens of the United States, have invented new and useful Improvements in Eyeglasses, of which the following is a specification.

Our invention relates -to certain improvee vide a removable spring and at the same time retain theI advantage of the usual re` taining head or shoulder and the neat appearance of a spring snugly fitted to the pivot post.

`We attain these objects by the construction illustrated in the accompanying drawing in which:

Figure 1 represents a rear elevation of an eyeglass embodying our invention. Fig. '2 represents a top or plan view of Fig. l. Fig. 3 represents a plan section through the spring recessin lens Strap. `Fig. 4 represents a detail elevation of the pivot post. Fig. 5 shows a pivot postwith a coiled spring being forced over itshead. Fig. 6 shows a pivot postl wit-h a coiled spring being removed over the head.

Similar figures refer to similar parts through the several views.

Referring to the drawings: l designates a pivot post or stud which is secured adjacent to the opposite ends of the bridge 2, and on which the guard or nose clip levers 3 are pivoted. 4 is a' shoulder on said post l, separating the guard lever 3 and the actuating spring 5, which-is a coiled spring Whose internal diameter is substantially equal to the diameter of the shank f5 of the pivotpost, and one endA of which is secured to the lever 3, while the other end is retained between the lens and the lens clip in the groove 7, which extends entirely across the inner faceof the strap 8 of 4 the. lens clips, the grooves being formed by offsetting or pressing back the strap 8 from the edge of' the lens. The head of the pivot postI l tapers in both directions from a maximum diameter 9, the lower portion tapering from 9 to the shank 6, and i the upper portion from 9 to a diameter l0, which is'less than the'internal diameter of the coiled spring 5. 4

The operation is as follows: The pivot postl l is secured in place With the lever 3 under the shoulder 4. One end of the spring 5 is pushed through the groove or opening 7, between the strap 8 and the lens, the internal diameter or the coil is then placed over the head atv l0, and the spring pushed l down, the tapering sides of the head acting as a Wedge and forcing the spring t-o open out. and slip over the maximum diameter of' the head at 9. The spring is pushed down onto the shank 6, which it snugly embraces, the free end is turned over and secured to the guard lever 3, and the end extending beyond the groove 7 is clipped off close to the strap or frame 8.

To remove the spring the operation is the i reverse of that described above. The upper end of the spring is Withdrawn from groove 7, the other end released from the lever 3, and the spring pulled up over the head, t-he tapering portion of which, between 'shank 6 and the maximum diameter 9 acts as a wedge and opens up the coil, allowing its removal over the head.

It will be seen that by the use of our invention a broken or weakened spring can he quickly and cheaply replaced Without in, jury to the mounting or the removal of the pivot screw, which removal, as is well known, usually strips the' threads of the post or the bridge, making the threads worthless, and requiring the hole for the post to be reamed out. and a larger post fitted. It will also be noted that by the use of a `groove or recess for the spring extending entirely through the lens attaching means, springs of predetermined length are not required, the protrading portion being cut off after the "spring is in place; this facilitates the replacing` of springs, and allows commercial or stock springs to be used with slight ad justment.

Having now described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. In eyeglasses provided with pivoted nose clamps, the combination of a coiled spring and a spring post having a head provided with downwardly and -upwardly expanding tapered surfaces.

'52. In eyeglasses provided with pivoted nose clamps, the combinationI of a spring post having a head provided with upwardly and downwardly expanding tapered surfaces; lens attaching means provided with a recess and a'spring for actuating the nose clamps having one end inserted in said re- Copes of this patent may be obtained for cess and the other end held against the nose clamp.

3. In eyeglasses provided with pivoted nose clamps, the combination of a spring post provided with expanding means adapted to open the coil of the spring as it is placed thereon and removed therefrom, lens clips provided with means for holding the free end of the spring and a spring for actuating the nose clamps having one end held against the'nose clamp andthe other in the holding means on the lens clips.

ln testimony whereof, We atiix our signatures in the presence of two Witnesses.

OSW/'ALD BCARSON. HARRY H. STYLL.

Witnesses lamme J. MCMANUS, Ro'r. S. CALLENDER.

five cents each, 'by addressing the Commissioner of Patents, Washington, D. C. 

